In the early 1900s, a hypothesis was introduced that proposed a single large landmass broke into smaller landmasses and formed the continents, which drifted to their present
locations. What is the name of this hypothesis?

a

explanation:

because it is and it's just life man

clumped distribution, because you'de have all of the population gathered in a relatively small are.

it's the most common because it provides protection and a mate for reproduction

example: humans, seeweed, cattles, etc.

i think the answer is a.keratin is the pigment responsible for skin color.